work well enough for me. We already stored some info in the session
so that we could also determine the user who is associated with the
session among others, so we just created an object to hold this info
and it implements HttpSessionActivationListener and sure enough, on
tomcat restart, it gets called so I can rebuild the list.
Well, I cheered too soon.... Tomcat appears to be able to reactivate
sessions even before my listeners are installed and my context has been
initialized, meaning, I get these session object activations "too early"
for my app to handle them. Here's my log showing the "did activate"
method being called before my context and session listeners were even
instantiated by Tomcat:
On shutdown, we see the session being passivated:
2009-08-09 14:10:32,328 DEBUG
(com.esignforms.open.admin.SessionTrackerInfo)
SessionTracker.SessionInfo() - Session will passivate:
9260160A7F18354F635AC5519F19FC5A
2009-08-09 14:10:32,344 DEBUG
(com.esignforms.open.servlet.ContextListener) ContextListener()
contextDestroyed: /test
On restart, we see the session be activated before the context is
instantiated or initialized:
2009-08-09 14:10:41,188 DEBUG
(com.esignforms.open.admin.SessionTrackerInfo)
SessionTracker.SessionInfo() - Session did activate:
9260160A7F18354F635AC5519F19FC5A
2009-08-09 14:10:41,594 DEBUG
(com.esignforms.open.servlet.ContextListener) ContextListener() instantiated
2009-08-09 14:10:41,594 DEBUG
(com.esignforms.open.servlet.SessionListener) SessionListener() instantiated
2009-08-09 14:10:41,610 INFO (OpenESignForms)
Application.loadOpenesignformsProperties() successfully loaded
properties from: openesignforms
2009-08-09 14:10:41,766 DEBUG
(com.esignforms.open.servlet.ContextListener) ContextListener()
contextInitialized: /test
The line shows Tomcat giving me the session did activate, and the second
line shows my context/session listeners being instantiated by Tomcat,
and the final line is emitted when my context listener completes
contextInitialized(). This must be a multi-thread timing issue because
I had not had this happen on several other restarts. Does this behavior
make sense that Tomcat resumes passivated sessions before it even sets
up the context? I'm sure I can store them until my context is
initialized, but the order sounds off to me.
David
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